Singlet-triplet filtering and entanglement in a quantum dot structure

被引：14

作者：

Giavaras, G. ^{[1
]}

Jefferson, J. H.

Fearn, M.

Lambert, C. J.

机构：

[1] Univ Lancaster, Dept Phys, Lancaster LA1 4YB, England

[2] QinetiQ, Malvern WR14 3PS, Worcs, England

来源：

PHYSICAL REVIEW B | 2007年 / 75卷 / 08期

关键词：

D O I：

10.1103/PhysRevB.75.085302

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We consider two interacting electrons in a semiconductor quantum dot structure, which consists of a small dot within a larger dot, and demonstrate a singlet-triplet filtering mechanism which involves spin-dependent resonances and can generate entanglement. By studying the exact time evolution of singlet and triplet states we show how the degree of both filtering and spin entanglement can be tuned using a time-dependent gate voltage.

引用

页数：6

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